So for the past few weeks I've been searching for foods that hornworms are known to eat in captivity when raising them. Here's what I got. silk worm chow This is obvious. There is also hornworm chow, but we're trying to find out what they eat BESIDES this. Tomato plants The natural food of horn worms, but it makes them toxic. Mulberry leaves This is simple enough. However, not everyone has access to mulberry trees, or trees that are big and don't have pesticides or problem insects. actual tomatoes (and broccoli and spinach) I thought this was weird too. Some posts I found said they had to be green, but most grocery stores get tomatoes in that were picked while green that turned red while they were off the vine, so I believe those would work. Besides, they taste like worm food anyway. These ones inhibits the absorption of calcium in the bones of what eats the hornworms to some degree. celery The post I found said it was mashed. collared greens Somehow makes sense. Perhaps it extends to mustard greens. grape vine leaves Bit odd. Chances are, you also won't have these available. red bell peppers The actual fruit and plant. dandelion leaves Silkies also eat these. Problems would be pesticides, weed killer, and bugs. romaine lettuce & raw potatoes *shrug* ....each other Everyone with hungry worms would know this. Perhaps it could indicate that they might consume other insects or meat-based protein? Anything else? I've been wanting to get a group of horn worms, some chow as a "for sure" food, and see what I can do about raising them cheaply.